diff --git a/setup.py b/setup.py
index f39f599fea8fc5edf676aa4cf4c01195a76a9657..56d1405c263cb07b55b7a0db1ebce092fe740a31 100644
--- a/setup.py
+++ b/setup.py
@@ -15,7 +15,7 @@ setup(
     author_email="gregory.ashton@ligo.org",
     description="python wrappers for lalpulsar F-statistic code",
     long_description=long_description,
-    long_description_content_type='text/markdown',
+    long_description_content_type="text/markdown",
     packages=find_packages(),
     include_package_data=True,
     package_data={